DYNAMIC ANALYSIS OF SPINNING DEPLOYMENT OF A SOLAR SAIL COMPOSED OF VISCOELASTIC MEMBRANES |
| |
| Authors: | Zhao Jiang Liu Cheng Tian Qiang Hu Haiyan |
| |
| Affiliation: | 1. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. MOE Key Lab of Dynamics and Control of Flight Vehicles, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China |
| |
| Abstract: | In recent years, increasing attention has been paid to the spinning deployment technology of solar sails for spacecraft. Such a solar sail can be regarded as a rigid-flexible multibody system mainly composed of a central rotating hub, a number of flexible thin tethers, sail membranes and tip masses. In order to model the sail membrane, a viscoelastic finite element of thin plate is proposed via the absolute nodal coordinate formulation (ANCF) and the efficacy of the finite element is testified first. Then, a simplified spinning deployable "IKAROS" model is established by using the absolute-coordinate-based (ACB) method in combination with ANCF and the natural coordinate formulation (NCF). Afterwards, a large set of stiff equations of system dynamics is solved by using the Generalized-α method. Therefore, the deployment dynamics of the system is well analyzed and the influence of the viscoelastic damping in the membranes on the deployment dynamics is discussed. |
| |
| Keywords: | solar sail|spinning deployment|viscoelasticity|absolute-coordinate-based (ACB) method |
|
| 点击此处可从《力学学报》浏览原始摘要信息 |
|
点击此处可从《力学学报》下载全文 |
|
